CN101492889A - Dyeing defect renovation agent and method for preparing the same - Google Patents
Dyeing defect renovation agent and method for preparing the same Download PDFInfo
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Abstract
The invention relates to a dyeing defect repair agent and a preparation method thereof. The dyeing defect repair agent comprises a color stripping agent and a color stripping catalyst and is characterized in that the ingredients of the color stripping agent based on weight percent comprise: 80-95% of an organic reducing agent which is zinc formaldehyde sulfoxylate (Decrolin), thiourea dioxide or leucotrope W; 20-5% of an inorganic reducing agent which is sodium thiosulfate, sodium bisulfite or sodium sulfite; the ingredients of the color stripping catalyst based on weight percent comprise: 5-10% of alkaline compounds which are organic bases comprising triethanolamine or which are inorganic bases comprising sodium carbonate, sodium hydroxide, potassium carbonate or sodium silicate; and soft water as the balance. The preparation method thereof employs the following procedures: preparing the color stripping agent: wherein, the organic reducing agent and the inorganic reducing agent based on the weight percentage are sufficiently and uniformly mixed under the room temperature; preparing the color stripping catalyst: wherein, the alkaline compounds based on the weight percent are dissolved and uniformly mixed by using the soft water under the room temperature.
Description
Technical field
The present invention relates to the textile dyeing technology, be specially the dyeing defect renovation agent that uses and preparation method thereof of stripping when the dyeing quality problem appears in a kind of textile dyeing processing.
Background technology,
Textiles is in dyeing course, and influence factor is many, causes the residual defects of dyeing such as color spot, look flower, color dot, aberration through regular meeting, directly has influence on the quality of dyeing and printing products.In order to improve the quality of products, reduce economic loss, up to the present, manufacturer generally adopts two kinds of methods to solve this type of problem: the first, original light fabric changed to dye be deep-colour fabric, promptly change and dye processing; The second, strip earlier, after redye.Generally speaking, first method is restricted because of having the interference of background color, change the kind of dying color, can not meet design and requirement of client sometimes; Second method has been eliminated its interference because of having divested background color, can not change fabric color when redying, more suitable actual production demand.
The traditional look stripping agent of repairing that uses mainly contains oxidized form and reduced form two big kinds at present.The chemicals of stripping with oxidation reaction mainly is clorox and hydrogen peroxide.Clorox easily to textiles cause show with potential damage, and can produce organic chloride AOX after the discharging, serious environment pollution, European many countries explicit order limit its use.Hydrogen peroxide is widely used in fabric bleaching processing, but the effect of stripping is desirable not to the utmost.The chemicals of stripping with reduction reaction mainly is the alkaline solution (be sodium hydrosulfite+alkaline agent strip system) of sodium hydrosulfite, and it is that present printing and dyeing enterprise uses maximum a kind of technology preparations of stripping.But sodium hydrosulfite has the following disadvantages: poor stability, be subjected to solar radiation or humidity after, easy firing and cause fire; In storage process, sodium hydrosulfite also can constantly decompose and reduce effective content; During use, often discharge sulfur dioxide gas, contaminated environment; Sodium hydrosulfite just shows stronger reducing power under alkali condition, thereby is applied to stripping of protein fibre fabric and is restricted; The suitable serviceability temperature of sodium hydrosulfite is 60 ℃, can decompose rapidly when being higher than 70 ℃ to lose effect, and stripping of some fabric need be greater than 70 ℃ technological temperature.Another kind of stripping agent is a pyridine, and it can be used for stripping of wool, and the effect of stripping is better, but pyridine is toxic, can emit the very strong smell of excitant, is not suitable for actual use the in factory and enterprise.Therefore development safety, economical, the novel look stripping agent of repairing is to improving the dyeing and printing products quality in kind, improving the performance of enterprises and the protection environment is all significant efficiently.
Homemade stripping agent CY-730 is a kind of new reduced form stripping agent (system).It is made of two components, and a component is reduction components CY-730, and another component plays catalytic action CY-770.Stripping agent CY-730 is a kind of liquid of inorganic matter composition, and is colourless; The catalyst CY-770 that strips is a kind of inorganic solid, white.Stripping agent CY-730 is 70～80% to the rate of stripping that cotton cloth reactive dye dyes thing; Wool acid dyeing thing, the rate of stripping be 80～95% (referring to Huang Maofu, New Stripping agent CY-730, printing and dyeing, 2006, NO2:40-41).
The ColorStrip stripping agent of U.S. Rhom and Hass also is a kind of new reduction system of stripping, and is similarly bi-component, is made up of ColorStrip2000 and auxiliary aid ColorStrip Catalyst100.The ColorStrip2000 outward appearance is a transparency liquid, contains 12% active material and 40% NaOH; ColorStrip Catalyst100 is a kind of non-ignitibility, noncorrosive white powder, the chemical name sodium pyrosulfite.This system of stripping is to the stripping of DISPERSE DYES, and because of dye structure is different very big difference, the rate of stripping being arranged is 40-90%; The rate of stripping to REACTIVE DYES is about 90%, when consumption very big (as 9%owf) and the time of stripping are grown (as 120min), the rate of stripping can reach 95-96% (referring to Zhang Cong, ColorStrip
TMSystem is in the dyeing and finishing technical application of stripping, 2001,23 (5): 31-33).
Described CY-730 strip system and ColorStrip
TMThe system of stripping, relatively, the rate of stripping is higher with traditional oxidation stripping agent or reduction stripping agent (using the system of stripping of sodium hydrosulfite+alkaline agent the most generally), and the fabric strength loss reduces, and is convenient to use, and security is higher.System only is 70～80% to the rate of stripping of cotton fabrics dyed with reactive dyes but CY-730 strips, and the K/S value of residual color is still higher, makes redying or change to dye and being restricted of the back fabric of stripping.Described ColorStrip
TMThe system of stripping, under the conventional amount used and the process conditions of stripping, the rate of stripping is about 90%, and when very high and time of stripping was longer at the stripping agent consumption, the rate of stripping just can reach 95-96%, and resource cost is many, and technological process is long, and efficient has much room for improvement.In addition, CY-730 system and the ColorStripTM system of stripping of stripping, the temperature of stripping is 98-100 ℃, the energy consumption height.
Summary of the invention
At the deficiencies in the prior art, the technical problem that quasi-solution of the present invention is determined is that a kind of dyeing defect renovation agent and preparation method thereof is provided.This dyeing defect renovation agent efficient height of stripping, the temperature of stripping is low, the time short, good stability, the condition of being stripped variable effect is little, and the stripping agent component of stripping is conventional compound, and cost is low, and is easy to use, environmentally friendly.This preparation method's technology is simple, and equipment requires lower, less energy consumption, and preparation and the equal organic solvent-free of the overall process of using use, and have the energy-saving and emission-reduction meaning.
The technical scheme that the present invention solves described dyeing defect renovation agent technical problem is: design a kind of dyeing defect renovation agent, comprise stripping agent and the catalyst of stripping, it is characterized in that the percentage by weight of this stripping agent consists of:
Organic reducing agent 80-95%;
Inorganic reducing agent 20-5%,
Described organic reducing agent is Deco woods, thiourea dioxide or discharge agent W; Described inorganic reducing agent is sodium thiosulfate, sodium hydrogensulfite or sodium sulfite;
The percentage by weight of this catalyst of stripping is formed and is comprised:
Alkali compounds 5-10%;
The soft water surplus,
Described alkali compounds is organic base or inorganic base, and described organic base comprises triethanolamine; Described inorganic base comprises sodium carbonate, NaOH, potash or sodium metasilicate.
The technical scheme that the present invention solves described preparation method's technical problem is: design a kind of preparation method of dyeing defect renovation agent, this preparation method adopts following technology:
The preparation stripping agent: the percentage by weight by stripping agent of the present invention is formed the pressed powder that takes by weighing organic reducing agent and inorganic reducing agent respectively, at room temperature fully mixes promptly then;
The preparation color stripping catalyst: form by the percentage by weight of the described catalyst of stripping and to take by weighing alkali compounds, at room temperature dissolve this alkali compounds with the soft water of described percentage by weight, behind the abundant mixing promptly.
Compared with prior art, the dyeing defect renovation agent of the present invention's design is having CY-730 and ColorStrip concurrently
TMUnder two system advantage prerequisites of stripping, improved the rate of stripping or the effect of stripping, for example, to stripping of cotton fabrics dyed with reactive dyes, the rate of stripping can reach 95-99% (wherein, can reach more than 97% most of REACTIVE DYES rate of stripping); The rate of stripping to the direct dyeing COTTON FABRIC can reach 96-99% (wherein, can reach more than 98% most of direct dyes rate of stripping); Orchid is received the rate of stripping of uniformly dyeing look cashmere fiber can reach 84-97%, and the fracture strength of fabric or fiber and elongation at break are influenced hardly, simultaneously, stripping agent all has the good effect of stripping at weak acid to alkaline range, and adaptability is good, applied range, easy to use, with low cost.With ColorStrip
TMThe system of stripping compares, and when reaching the higher rate of stripping (more than 95%), dyeing defect renovation agent of the present invention also has temperature of stripping low (temperature 60-90 ℃), the process time short (20-50min) of stripping, characteristics that the stripping agent consumption is few.Preparation method's technology of the present invention is simple, with low cost, and energy consumption is low, and is pollution-free, is suitable for suitability for industrialized production.
The specific embodiment:
Below in conjunction with embodiment the present invention is done further explaination.
Dyeing defect renovation agent of the present invention is a kind of chemicals, and its function is man-hour to occur the reparation of stripping of fabric (or other textile materials) that color spot, color dot, aberration etc. dye the defect quality problems to adding at dyeing, stamp.The conventional method of repairing of stripping is, to effectively destroy the dyestuff on the fabric that quality problems occur with renovation agent earlier, its color is significantly shoaled thin out (thereby renovation agent also claims stripping agent or dressing agent), and then by the designing requirement reparation of dyeing again, to improve the quality of products, satisfy the delivery specification requirement.
The dyeing defect renovation agent (hereinafter to be referred as renovation agent or BS system) of the present invention's design is the bi-component BS system of the stripping agent and the catalyst formation of stripping, and it is characterized in that the percentage by weight of this stripping agent consists of:
Organic reducing agent 80-95%;
Inorganic reducing agent 20-5%,
Described organic reducing agent is Deco woods (zinc formaldehyde sulfoxylate salt, molecular formula Zn (HSO
2CH
2O)
2), reductant FM (thiourea dioxide, molecular formula O
2SC (NH
2)
2) or discharge agent W (3,5-dimethylphenyl benzyl ammonium chloride disulfonic acid calcium salt, molecular formula C
15H
16O
6NClCaS
2); Described inorganic reducing agent is dodium thiosulfate (hypo, sodium thiosulfate, molecular formula Na
2S
2O
35H
2O), sodium hydrogensulfite (sodium bisulfite, molecular formula NaHSO
3) or sodium sulfite (molecular formula Na
2SO
3).
Organic reducing agent that the present invention is selected and inorganic reducing agent have cooperative effect preferably, can improve or strengthen the ability of stripping of reducing, and improve the effect of stripping, and are commercially available chemical substance commonly used, and stable performance is with low cost, is suitable for industrialization and uses.
The percentage by weight of the catalyst of stripping of the present invention is formed and is comprised:
Alkali compounds 5-10%;
The soft water surplus,
Described alkali compounds is organic base or inorganic base.Described organic base comprises triethanolamine (N (CH
2CH
2OH)
3); Described inorganic base comprises sodium carbonate (NaCO
3), NaOH (NaOH), potash (KCO
3) or sodium metasilicate (NaSiO
3).Comparatively speaking, inorganic base obtains easily, and is with low cost, can pay the utmost attention to and select for use.
The further feature of dyeing defect renovation agent of the present invention is: the percentage by weight of the described catalyst of stripping also comprises in forming:
Chelating agent 8-30%;
Dispersant 5-30%;
Wetting and penetrating agent 5-15%.
That is, the percentage by weight of the described catalyst of stripping consists of:
Alkali compounds 5-10%;
Chelating agent 8-30%;
Dispersant 5-30%;
Wetting and penetrating agent 5-15%;
The soft water surplus.
Described chelating agent can adopt micromolecular chelating agent, as micromolecule chelating agent EDTA, sodium pyrophosphate etc., also can adopt macromolecular chelating agent, as big molecule chelating agent LL-206 etc.; Described dispersant adopts big molecule, non-ionic dispersing agent, as dispersant IW (fatty alcohol-polyoxyethylene ether), dispersant WA (higher aliphatic polyoxyethylene ether and methyl trichlorosilane condensation product) or dispersant A N (high fatty amine and ethylene oxide condensate); Described wetting and penetrating agent is paregal O-20 (fatty alcohol and ethylene oxide condensate), peregal os-15, paregal O or penetrating agent BX (sodium butylnaphthalenesulfonate) etc.
Alkali compounds of the present invention and various auxiliary agent itself are the prior art commercially available prod.The selected various auxiliary agent compatibilities of the present invention are good, composite after, have the good promotion function of stripping.Its main component comprises alkali compounds, has the function that promotes that stripping agent plays a role; And described chelating agent and dispersant can make the dyestuff residue that is reduced destruction stably dissolve to be dispersed in the working solution, to be beneficial to further playing a role of stripping agent, and for the dyestuff of metal ion, the collaborative ability of stripping are arranged; The higher wetting and penetrating agent of usefulness can make the stripping agent system permeate apace and act on dyestuff.Experimental study shows, when not adding described chelating agent, dispersant and wetting and penetrating agent, and the effect of stripping of the catalyst of stripping descend (it is about 10% that the rate of stripping descends, referring to embodiment 4).This explanation when containing the chelating agent, dispersant of described percentage by weight and wetting and penetrating agent during the color stripping catalyst prescription is formed, is stripped and is repaired usefulness and significantly improve.
The renovation agent of the present invention preparation efficient height of stripping, the temperature of stripping is low, the time short, and is easy to use, less energy consumption, preparation and the overall process of using all do not relate to organic solvent, and be environmentally friendly, has the energy-saving and emission-reduction meaning.
The present invention has designed the preparation method (abbreviation preparation method) of described dyeing defect renovation agent simultaneously, and it adopts following technology:
Preparation stripping agent: form the pressed powder that takes by weighing organic reducing agent and inorganic reducing agent respectively by the described weight percentages of components of stripping, at room temperature fully mix promptly then;
The preparation color stripping catalyst: form by the percentage by weight of the described catalyst of stripping and to take by weighing alkali compounds, at room temperature dissolve this alkali compounds with the soft water of described percentage by weight, behind the abundant mixing promptly.
When in described color stripping catalyst is formed, containing described chelating agent, dispersant and wetting and penetrating agent, the method for preparing color stripping catalyst is: take by weighing each component respectively by the described catalytic component percentage by weight composition of stripping, soft water with described percentage by weight at room temperature dissolves each component respectively, then the dissolving the alkali compounds component in add described chelating agent, dispersant and wetting and penetrating agent successively, after fully mixing promptly.If described dissolving at room temperature can not fine dissolving or mixed and take when long, can be mixed being heated to dissolve under 40-50 ℃ the temperature.
Renovation agent of the present invention can be used for stripping of REACTIVE DYES, direct dyes, reactive dye for wool and DISPERSE DYES, has favorable applicability.
The using method of renovation agent of the present invention is: when the reparation that is used for REACTIVE DYES, direct dyes or reactive dye for wool was stripped, technological parameter can be designed to: stripping agent was 0.5-4 (g/L), catalyst 1-8 (g/L) strips; 60-90 ℃ of the temperature of stripping, the time 20-50min that strips, the working solution bath raio of stripping 1: 30.Operating procedure is: take by weighing the stripping agent that requires consumption and the catalyst of stripping respectively, earlier stripping agent is dissolved with soft water, Yu Shui supplies, and stirs, and the catalyst of will stripping again directly joins in the stripping agent lysate, stirs, and promptly prepares the working solution of stripping.When being used for the DISPERSE DYES reparation and stripping, technological parameter can be designed to: 120-140 ℃ of the temperature of stripping, the time 20-50min that strips, vinegar acid for adjusting pH value be to 4.5-5.0, dyeing accelerant 0.5-3g/L, bath raio 1: 30.Operating procedure is same as described REACTIVE DYES.After stripping, process conditions are on request carried out repair process again.Strip after the repair process, washing, oven dry, and then redye or change by designing requirement and dye.
The present invention does not address part and is applicable to prior art.
Provide specific embodiments of the invention below, these embodiment further specify of the present invention, do not constitute the restriction to claim protection domain of the present invention.
Embodiment 1:
The preparation stripping agent: stripping agent (brief note is BS-A) percentage by weight (down together) prescription consists of: Deco woods 85%, sodium thiosulfate 15%; Take by weighing the pressed powder of Deco woods and sodium thiosulfate respectively by described percentage by weight prescription composition, and at room temperature fully mix promptly.
Prepare the catalyst of stripping: fill a prescription consists of the catalyst of stripping (brief note is BS-B) percentage by weight (down together): sodium carbonate 10%, chelating agent LL-20625%, dispersant IW 25%, wetting and penetrating agent (abbreviation wetting agent) paregal O 10% and water soft 30%; Take by weighing described each component respectively by described composition, dissolve sodium carbonate and paregal O respectively, in the sodium carbonate components of dissolving, add the wetting agent of described chelating agent and dispersant, dissolving successively with soft water, after fully being mixed promptly.
Form the system of stripping (BS-A and BS-B) for preparing with above-mentioned prescription, respectively the COTTON FABRIC of the red FN-2R of REACTIVE DYES, yellow FN-2R, blue FN-2R dyeing is stripped.The condition of stripping is: the component of stripping 1g/L, the catalyst component of stripping are 2g/L, bath raio 1: 30; 70 ℃ of the temperature of stripping, time 20min strips.The technological process of stripping is: consumption takes by weighing BS-A and BS-B on request respectively, and BS-A dissolves with soft water with stripping agent, and surplus water is supplied, after stirring, BS-B is directly added in the BS-A solution, after stirring, under 70 ℃ of temperature, behind the stripping treatment 20min, washing, oven dry.Promptly finish the processing of stripping.
Through check, after stripping, the rate of stripping of the COTTON FABRIC of described three kinds of dyeings is respectively 96.0%, 97.29% and 96.35%, and the extension at break of fiber and fracture strength almost there are not variation, and data are listed in table 1.
The variation of fabric ultimate strength and extension at break before and after table 1 is stripped
Embodiment 2:
The preparation stripping agent: BS-A consists of: thiourea dioxide 90%, sodium sulfite 10%, take by weighing the pressed powder of thiourea dioxide and sodium sulfite respectively by described composition, and at room temperature fully be mixed promptly.
Prepare the catalyst of stripping: BS-B consists of: NaOH sodium 5%, sodium pyrophosphate 25%, dispersant IW 25%, paregal O 10% and water 35%; Take by weighing described each component respectively by described composition,, in the NaOH component of dissolving, add the wetting agent of described chelating agent, dispersant, dissolving successively, fully be mixed promptly with soft water difference dissolved hydrogen sodium oxide molybdena and paregal O.
Form BS-A and the BS-B for preparing with above-mentioned prescription, respectively the COTTON FABRIC of direct red 4B S, direct yellow R, 2R Direct blue B2R-2RL dyeing is stripped.The condition of stripping is: BS-A 1g/L, BS-B 2g/L, and bath raio 1: 30,80 ℃ of the temperature of stripping, time 20min strips.Surplus with embodiment 1.
Through check, after stripping, the rate of stripping of the COTTON FABRIC of described three kinds of direct dyeings is respectively 98.60%, 98.39% and 98.60%.
Embodiment 3:
The preparation stripping agent: BS-consists of: thiourea dioxide 80%, sodium sulfite 20%, take by weighing the pressed powder of thiourea dioxide and sodium sulfite respectively by described composition, and fully be mixed promptly under the room temperature.
Prepare the catalyst of stripping: BS-B consists of: NaOH sodium 5%, chelating LL-20625%, dispersant IW 20%, paregal O 10% and water 40%; Take by weighing described each component respectively,, in the NaOH component of dissolving, add the wetting agent of described chelating agent, dispersant, dissolving successively, fully be mixed promptly with soft water difference dissolved hydrogen sodium oxide molybdena and paregal O.
Form the system of stripping of preparation with above-mentioned prescription, respectively orchid is received plain yellow 4G, orchid and receive plain blue 3R, orchid and receive the wool fibre of plain red B dyeing and strip.The condition of stripping is: BS-A 3g/L, BS-B 6g/L, and acetic acid adjust pH=7, bath raio 1: 30,70 ℃ of the temperature of stripping, time 40min strips.Surplus with embodiment 1.
Through check, after stripping, the rate of stripping of the COTTON FABRIC of described three kinds of dyeings is respectively 85.40%, 88.50% and 97.75%, and the extension at break of fiber and fracture strength change little, and data are listed in table 2.
The variation of wool fibre ultimate strength and extension at break before and after table 2 is stripped
Embodiment 4
The preparation stripping agent: BS-A consists of: thiourea dioxide 85%, sodium thiosulfate 15%, take by weighing thiourea dioxide and sodium thiosulfate respectively by described composition, and fully be mixed promptly under the room temperature.
Prepare the catalyst of stripping: BS-B consists of: NaOH sodium 15%, water 85%; Take by weighing described NaOH, water respectively by described composition,, fully mix promptly with soft water dissolved hydrogen sodium oxide molybdena.
Form BS-A and the BS-B for preparing with above-mentioned prescription, respectively the COTTON FABRIC of the red FN-2R of REACTIVE DYES, yellow FN-2R, blue FN-2R dyeing is stripped.The condition of stripping is: BS-A 1g/L, BS-B 2g/L, and bath raio 1: 30,85 ℃ of the temperature of stripping, time 30min strips.Strip technological process with embodiment 1
Through check, after stripping, the rate of stripping of the COTTON FABRIC of described three kinds of dyeings is respectively 87.00%, 87.30% and 86.70%.This embodiment shows, does not contain the promoter of stripping of chelating agent, dispersant and wetting agent during prescription is formed, and the rate of stripping descends about 10%.
Embodiment 5
The preparation stripping agent: BS-A consists of: thiourea dioxide 85%, sodium thiosulfate 15%, take by weighing thiourea dioxide and sodium thiosulfate respectively by described composition, and at room temperature abundant mixing is promptly.
Prepare the catalyst of stripping: BS-B consists of: NaOH 5%, chelating agent LL-20625%, dispersant IW 25%, paregal O 10% and water 35%; Take by weighing described each component respectively by described composition,, in the NaOH component of dissolving, add the wetting agent of described chelating agent, dispersant, dissolving successively, fully mix promptly with soft water difference dissolved hydrogen sodium oxide molybdena and paregal O.
Form the system of stripping for preparing with above-mentioned prescription, respectively the COTTON FABRIC of the blue FN-2R dyeing of the red FN-2R of REACTIVE DYES Ciba, Ciba yellow FN-2R, Ciba is stripped.The condition of stripping is: with embodiment 1.
Through check, after stripping, the rate of stripping of the COTTON FABRIC of described three kinds of dyeings is respectively 97.50%, 98.50% and 98.83%.
Embodiment 6
The preparation stripping agent: BS-A consists of: thiourea dioxide 90%, sodium sulfite 10%, take by weighing thiourea dioxide and sodium sulfite respectively by described composition, and at room temperature abundant mixing is promptly.
Prepare the catalyst of stripping: BS-B consists of: sodium carbonate 5%, chelating agent EDTA 20%, dispersant A N20%, peregal os-15 15% and water 55%; Take by weighing described each component respectively by described composition,, in the NaOH component of dissolving, add the wetting agent of described chelating agent, dispersant, dissolving successively, fully mix promptly with soft water difference dissolved hydrogen sodium oxide molybdena and peregal os-15.
Adopt above-mentioned prescription to form the system of stripping of preparation, respectively the dacron of disperse grey N, Disperse Blue 2BLN dyeing is stripped.The condition of stripping is: BS-A 2.5g/L, BS-B 5g/L, and dyeing accelerant P NEW 2g/L, acetic acid adjust pH=4.8, bath raio 1: 30,130 ℃ of the temperature of stripping, time 30min strips.Surplus with embodiment 1.
Through check, after stripping, the rate of stripping of the dacron of described two kinds of dyeings is respectively 88.30% and 84.60%.
Claims (5)
1. a dyeing defect renovation agent comprises stripping agent and the catalyst of stripping, and it is characterized in that the percentage by weight of this stripping agent consists of:
Organic reducing agent 80-95%;
Inorganic reducing agent 20-5%,
Described organic reducing agent is Deco woods, thiourea dioxide or discharge agent W; Described inorganic reducing agent is sodium thiosulfate, sodium hydrogensulfite or sodium sulfite;
The percentage by weight of this catalyst of stripping is formed and is comprised:
Alkali compounds 5-10%;
The soft water surplus,
Described alkali compounds is organic base or inorganic base, and described organic base comprises triethanolamine; Described inorganic base comprises sodium carbonate, NaOH, potash or sodium metasilicate.
2. according to the described dyeing defect renovation agent of claim 1, the percentage by weight that it is characterized in that the described catalyst of stripping also comprises in forming:
Chelating agent 8-30%;
Dispersant 5-30%;
Wetting and penetrating agent 5-15%,
Described chelating agent is chelating agent EDTA, sodium pyrophosphate or chelating agent LL-206; Described dispersant is dispersant IW, dispersant WA or dispersant A N; Described wetting and penetrating agent is paregal O-20, peregal os-15, paregal O or penetrating agent BX.
3. preparation method according to the described dyeing defect renovation agent of claim 1, this preparation method adopts following technology:
The preparation stripping agent: the percentage by weight by described stripping agent is formed the pressed powder that takes by weighing organic reducing agent and inorganic reducing agent respectively, at room temperature fully mixes promptly then;
The preparation color stripping catalyst: form by the percentage by weight of the described catalyst of stripping and to take by weighing alkali compounds, at room temperature dissolve this alkali compounds with the soft water of described percentage by weight, behind the abundant mixing promptly.
4. preparation method according to the described dyeing defect renovation agent of claim 2, this preparation method adopts following technology:
The preparation stripping agent: the percentage by weight by described stripping agent is formed the pressed powder that takes by weighing organic reducing agent and inorganic reducing agent respectively, at room temperature fully mixes promptly then;
The preparation color stripping catalyst: the percentage by weight composition by the described catalyst of stripping takes by weighing described each component respectively, soft water with described percentage by weight at room temperature dissolves each component respectively, then the dissolving the alkali compounds component in add described chelating agent, dispersant and wetting and penetrating agent successively, after fully mixing promptly.
5. according to the preparation method of claim 3 or 4 described dyeing defect renovation agents, the temperature that it is characterized in that described dissolving is 40-50 ℃.
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